关于定语从句作主语和宾语理解修饰和翻译疑问。i know the boy who is tall and handsome. 做主语,从句中,the boy is tall and handsome.I bought a book which sells well. 做主语,在从句中, the book sells well.I know the boy who he is talking with. 做宾语,在从...
在含有since的时间状语从句中的主要分句能用一般过去时和用完成时有什么含义的不同?The annual assembly was held
outside the Chinese mainland for the first time since its establishment in 2018.与主句改成现在完成时有什么具体语义上的不同?